@charset "UTF-8";

/* ===== Design System Variables ===== */
:root {
  --primary: #4F6EF7;
  --primary-dark: #3B54D4;
  --primary-light: #E8EDFF;
  --primary-soft: #F0F4FF;
  --red: #FF6B6B;
  --red-light: #FFE8E8;
  --green: #10B981;
  --green-light: #D1FAE5;
  --orange: #F59E0B;
  --orange-light: #FEF3C7;
  --purple: #8B5CF6;
  --purple-light: #EDE9FE;
  --cyan: #06B6D4;
  --cyan-light: #CFFAFE;
  --pink: #EC4899;
  --pink-light: #FCE7F3;
  --dark: #1E293B;
  --dark-2: #334155;
  --gray: #64748B;
  --gray-light: #94A3B8;
  --bg: #F1F5F9;
  --card: #FFFFFF;
  --border: #E2E8F0;
  --shadow: 0 2px 8px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.08);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.12);
  --radius: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  --header-h: 60px;
  --vip: #F59E0B;
  --vip-light: #FEF3C7;
  --danger: #FF6B6B;
  --success: #10B981;
  --warning: #F59E0B;
}

/* ===== Reset ===== */
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{-webkit-text-size-adjust:100%;-webkit-tap-highlight-color:transparent}
body{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI','PingFang SC','Hiragino Sans GB','Microsoft YaHei',sans-serif;background:var(--bg);color:var(--dark);line-height:1.6;min-height:100vh;overflow-x:hidden}
a{text-decoration:none;color:inherit}
ul,ol{list-style:none}
img{max-width:100%;display:block}
button,input,select,textarea{font:inherit;border:none;outline:none;background:none}
button{cursor:pointer}

/* ===== Utility ===== */
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 16px}
.flex{display:flex}.flex-col{flex-direction:column}.items-center{align-items:center}.justify-between{justify-content:space-between}.justify-center{justify-content:center}.gap-8{gap:8px}.gap-12{gap:12px}.gap-16{gap:16px}
.text-center{text-align:center}.text-right{text-align:right}
.fw-600{font-weight:600}.fw-700{font-weight:700}
.text-sm{font-size:13px}.text-xs{font-size:12px}.text-lg{font-size:18px}.text-xl{font-size:22px}
.text-gray{color:var(--gray)}.text-primary{color:var(--primary)}.text-red{color:var(--red)}.text-green{color:var(--green)}
.mt-8{margin-top:8px}.mt-12{margin-top:12px}.mt-16{margin-top:16px}.mt-24{margin-top:24px}.mb-8{margin-bottom:8px}.mb-12{margin-bottom:12px}.mb-16{margin-bottom:16px}.mb-24{margin-bottom:24px}
.p-16{padding:16px}.p-20{padding:20px}
.hidden{display:none!important}

/* ===== Header (Fixed Top) ===== */
.site-header{
  position:fixed;top:0;left:0;right:0;
  height:var(--header-h);z-index:1000;
  background:linear-gradient(135deg,#4F46E5 0%,#7C3AED 50%,#6366F1 100%);
  color:#fff;
  box-shadow:0 2px 16px rgba(79,70,229,0.35);
  backdrop-filter:blur(10px);
}
.header-inner{
  max-width:1200px;margin:0 auto;height:100%;
  padding:0 16px;
  display:flex;align-items:center;justify-content:space-between;
}

/* Logo */
.logo{display:flex;align-items:center;gap:10px;white-space:nowrap;flex-shrink:0;text-decoration:none;color:#fff}
.logo-icon{
  width:36px;height:36px;border-radius:10px;
  background:rgba(255,255,255,0.15);backdrop-filter:blur(4px);
  display:flex;align-items:center;justify-content:center;
  flex-shrink:0;
  box-shadow:0 2px 8px rgba(0,0,0,0.1);
}
.logo-icon svg{color:#fff}
.logo-text{display:flex;flex-direction:column;line-height:1.15}
.logo-title{font-size:15px;font-weight:700;letter-spacing:0.5px}
.logo-sub{font-size:10px;font-weight:400;opacity:.75;letter-spacing:0.3px}

/* Desktop nav */
.nav-menu{display:none;gap:2px;margin:0 8px}
.nav-menu a{
  padding:7px 14px;border-radius:8px;font-size:13.5px;font-weight:500;
  display:flex;align-items:center;gap:5px;white-space:nowrap;
  transition:all .2s;color:rgba(255,255,255,0.88);
}
.nav-menu a span{font-size:14px}
.nav-menu a:hover{background:rgba(255,255,255,0.18);color:#fff}
.nav-menu a.active{background:rgba(255,255,255,0.22);color:#fff;font-weight:600;
  box-shadow:inset 0 -2px 0 rgba(255,255,255,0.5);
}

/* User bar */
.user-bar{display:flex;align-items:center;gap:10px;flex-shrink:0}
.user-name{font-size:13px;max-width:80px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;opacity:.9}
.btn-logout{
  font-size:12px;padding:5px 12px;border-radius:6px;
  background:rgba(255,255,255,0.12);color:rgba(255,255,255,0.85);
  transition:all .2s;cursor:pointer;white-space:nowrap;
}
.btn-logout:hover{background:rgba(255,255,255,0.25);color:#fff}

/* Hamburger */
.hamburger{
  width:38px;height:38px;display:flex;align-items:center;justify-content:center;
  border-radius:10px;cursor:pointer;transition:background .2s;
}
.hamburger:hover{background:rgba(255,255,255,0.2)}
.hamburger svg{width:20px;height:20px}

/* Mobile nav overlay */
.mobile-nav{
  position:fixed;top:var(--header-h);left:0;right:0;bottom:0;
  background:rgba(15,23,42,0.5);z-index:999;
  opacity:0;visibility:hidden;transition:all .3s;
  backdrop-filter:blur(4px);
}
.mobile-nav.open{opacity:1;visibility:visible}
.mobile-nav-panel{
  position:absolute;top:0;left:0;right:0;
  background:var(--card);border-radius:0 0 var(--radius-xl) var(--radius-xl);
  padding:8px 16px 16px;box-shadow:var(--shadow-lg);
  transform:translateY(-20px);transition:transform .3s;
  max-height:70vh;overflow-y:auto;
}
.mobile-nav.open .mobile-nav-panel{transform:translateY(0)}
.mobile-nav-header{
  display:flex;align-items:center;gap:8px;
  padding:12px 4px 10px;border-bottom:1px solid var(--border);
  margin-bottom:6px;
}
.mobile-nav-user{font-size:15px;font-weight:600;color:var(--dark)}
.mobile-nav-panel a{
  display:flex;align-items:center;gap:10px;
  padding:13px 12px;border-radius:10px;font-size:15px;font-weight:500;
  color:var(--dark);transition:background .15s;
}
.mobile-nav-panel a:hover,.mobile-nav-panel a.active{background:var(--primary-soft);color:var(--primary)}
.mobile-nav-divider{height:1px;background:var(--border);margin:6px 4px}
.mobile-nav-logout{color:var(--red)!important;font-weight:600!important}
.mobile-nav-logout:hover{background:var(--red-light)!important;color:var(--red)!important}

/* Body padding for fixed header */
.page-body{padding-top:var(--header-h)}

/* ===== Buttons ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:6px;
  padding:10px 22px;border-radius:var(--radius);
  font-size:14px;font-weight:600;cursor:pointer;
  transition:all .25s;white-space:nowrap;border:none;
  position:relative;overflow:hidden;
}
.btn::after{
  content:'';position:absolute;inset:0;
  background:rgba(255,255,255,0);transition:background .25s;
}
.btn:active::after{background:rgba(255,255,255,0.2)}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-dark);transform:translateY(-1px);box-shadow:0 6px 20px rgba(79,110,247,0.35)}
.btn-success{background:var(--green);color:#fff}
.btn-success:hover{background:#059669;transform:translateY(-1px);box-shadow:0 6px 20px rgba(16,185,129,0.35)}
.btn-red{background:var(--red);color:#fff}
.btn-outline{background:transparent;border:2px solid var(--primary);color:var(--primary)}
.btn-outline:hover{background:var(--primary);color:#fff}
.btn-ghost{background:rgba(255,255,255,0.15);color:#fff;backdrop-filter:blur(4px)}
.btn-ghost:hover{background:rgba(255,255,255,0.25)}
.btn-sm{padding:6px 12px;font-size:12px;border-radius:8px}
.btn-lg{padding:14px 28px;font-size:16px;border-radius:var(--radius-lg)}
.btn-full{width:100%}

/* ===== Cards ===== */
.card{
  background:var(--card);border-radius:var(--radius-lg);padding:20px;
  box-shadow:var(--shadow);transition:transform .2s,box-shadow .2s;
}
.card:hover{box-shadow:var(--shadow-md)}
.card-flat{box-shadow:none;border:1px solid var(--border)}
.card-flat:hover{border-color:var(--primary);box-shadow:0 0 0 2px var(--primary-light)}

/* ===== Badges ===== */
.badge{
  display:inline-flex;align-items:center;gap:3px;
  padding:3px 10px;border-radius:20px;font-size:11px;font-weight:600;
}
.badge-primary{background:var(--primary-light);color:var(--primary-dark)}
.badge-red{background:var(--red-light);color:#DC2626}
.badge-green{background:var(--green-light);color:#047857}
.badge-orange{background:var(--orange-light);color:#B45309}
.badge-purple{background:var(--purple-light);color:#6D28D9}
.badge-cyan{background:var(--cyan-light);color:#0E7490}
.badge-pink{background:var(--pink-light);color:#BE185D}
.badge-gray{background:#F1F5F9;color:var(--gray)}
.badge-vip{background:var(--vip-light);color:#B45309}

/* ===== Form ===== */
.form-group{margin-bottom:16px}
.form-label{display:block;font-size:13px;font-weight:600;margin-bottom:6px;color:var(--dark)}
.form-input-wrap{
  position:relative;display:flex;align-items:center;
}
.form-input-wrap .fi-icon{
  position:absolute;left:14px;font-size:16px;pointer-events:none;color:var(--gray-light);
}
.form-input{
  width:100%;padding:12px 14px 12px 42px;
  border:2px solid var(--border);border-radius:var(--radius);
  font-size:15px;transition:border-color .2s,box-shadow .2s;
  background:#fff;
}
.form-input:focus{border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-light)}
.form-input::placeholder{color:var(--gray-light)}
.form-select{
  width:100%;padding:12px 14px;
  border:2px solid var(--border);border-radius:var(--radius);
  font-size:15px;background:#fff;transition:border-color .2s;
}
.form-select:focus{border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-light)}

/* ===== Dashboard ===== */
.dashboard{max-width:1200px;margin:0 auto;padding:20px 16px}

/* Welcome Banner */
.welcome-banner{
  background:linear-gradient(135deg,var(--primary) 0%,#6C63FF 50%,var(--purple) 100%);
  border-radius:var(--radius-xl);padding:24px 20px;color:#fff;
  position:relative;overflow:hidden;margin-bottom:20px;
}
.welcome-banner::before{
  content:'';position:absolute;right:-30px;top:-30px;
  width:120px;height:120px;border-radius:50%;
  background:rgba(255,255,255,0.1);
}
.welcome-banner::after{
  content:'';position:absolute;right:40px;bottom:-20px;
  width:80px;height:80px;border-radius:50%;
  background:rgba(255,255,255,0.08);
}
.welcome-banner h2{font-size:20px;margin-bottom:4px;position:relative;z-index:1}
.welcome-banner p{font-size:13px;opacity:.9;position:relative;z-index:1}
.welcome-vip{
  display:inline-flex;align-items:center;gap:4px;
  background:rgba(255,255,255,0.2);padding:4px 12px;border-radius:20px;
  font-size:12px;font-weight:600;margin-top:10px;position:relative;z-index:1;
  backdrop-filter:blur(4px);
}

/* Stats Grid */
.stats-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin-bottom:20px}
.stat-card{
  background:var(--card);border-radius:var(--radius-lg);padding:16px;
  box-shadow:var(--shadow);display:flex;align-items:center;gap:12px;
  transition:transform .2s;
}
.stat-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-md)}
.stat-icon{
  width:46px;height:46px;border-radius:var(--radius);flex-shrink:0;
  display:flex;align-items:center;justify-content:center;font-size:22px;
}
.stat-icon.blue{background:var(--primary-light)}
.stat-icon.orange{background:var(--orange-light)}
.stat-icon.green{background:var(--green-light)}
.stat-icon.purple{background:var(--purple-light)}
.stat-icon.red{background:var(--red-light)}
.stat-icon.cyan{background:var(--cyan-light)}
.stat-info h3{font-size:22px;font-weight:700;color:var(--dark);line-height:1.2}
.stat-info p{font-size:12px;color:var(--gray);margin-top:2px}

/* Section Title */
.section-title{
  font-size:16px;font-weight:700;margin-bottom:14px;
  display:flex;align-items:center;gap:6px;
}

/* ===== Public Course Quick Entry ===== */
.quick-entry{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-bottom:24px}
.quick-card{
  background:var(--card);border-radius:var(--radius-lg);padding:18px 12px;
  text-align:center;box-shadow:var(--shadow);
  transition:transform .2s,box-shadow .2s;cursor:pointer;
  position:relative;overflow:hidden;
}
.quick-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md)}
.quick-card::before{
  content:'';position:absolute;top:0;left:0;right:0;height:3px;
}
.quick-card.lang::before{background:linear-gradient(90deg,#FF6B6B,#FF8E8E)}
.quick-card.math::before{background:linear-gradient(90deg,#4F6EF7,#6C63FF)}
.quick-card.eng::before{background:linear-gradient(90deg,#10B981,#34D399)}
.quick-icon{font-size:32px;margin-bottom:8px;display:block}
.quick-card h4{font-size:14px;font-weight:600;color:var(--dark);line-height:1.3}
.quick-card p{font-size:11px;color:var(--gray);margin-top:4px}

/* ===== Category Grid ===== */
.category-grid{
  display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-bottom:24px;
}
.category-item{
  background:var(--card);border-radius:var(--radius);padding:14px 10px;
  text-align:center;box-shadow:var(--shadow);
  transition:transform .2s,box-shadow .2s;cursor:pointer;
  border:2px solid transparent;
}
.category-item:hover{border-color:var(--primary);transform:translateY(-2px)}
.category-icon{font-size:26px;margin-bottom:4px;display:block}
.category-name{font-size:13px;font-weight:600;color:var(--dark);line-height:1.3}
.category-count{font-size:11px;color:var(--gray);margin-top:2px}

/* ===== Course Grid ===== */
.course-grid{
  display:grid;grid-template-columns:1fr;gap:12px;
}
.course-card{
  background:var(--card);border-radius:var(--radius-lg);overflow:hidden;
  box-shadow:var(--shadow);transition:transform .2s,box-shadow .2s;cursor:pointer;
  display:flex;flex-direction:column;
}
.course-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md)}
.course-header{
  padding:14px 16px;color:#fff;position:relative;min-height:60px;
  display:flex;flex-direction:column;justify-content:center;
}
.course-header.type-1{background:linear-gradient(135deg,#059669 0%,#10B981 100%)}
.course-header.type-2{background:linear-gradient(135deg,var(--purple) 0%,#A78BFA 100%)}
.course-header.type-3{background:linear-gradient(135deg,var(--primary) 0%,#6C63FF 100%)}
.course-header.lang{background:linear-gradient(135deg,#C0392B 0%,#E74C3C 100%)}
.course-header.math{background:linear-gradient(135deg,#2980B9 0%,#3498DB 100%)}
.course-header.eng{background:linear-gradient(135deg,#27AE60 0%,#2ECC71 100%)}
.course-code{
  display:inline-block;font-size:10px;background:rgba(255,255,255,0.25);
  padding:1px 8px;border-radius:4px;margin-bottom:4px;width:fit-content;
}
.course-header h3{font-size:15px;font-weight:600;line-height:1.3}
.course-header span{font-size:11px;opacity:.9}
.course-body{padding:14px 16px;flex:1;display:flex;flex-direction:column;justify-content:space-between}
.course-meta{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:10px}
.course-bottom{display:flex;align-items:center;justify-content:space-between;margin-top:auto}

/* ===== Progress Bar ===== */
.progress-bar{width:100%;height:6px;background:#E2E8F0;border-radius:3px;overflow:hidden}
.progress-fill{
  height:100%;border-radius:3px;
  background:linear-gradient(90deg,var(--primary),#6C63FF);
  transition:width .6s ease;
  position:relative;
}
.progress-fill::after{
  content:'';position:absolute;top:0;left:0;right:0;bottom:0;
  background:linear-gradient(90deg,transparent 0%,rgba(255,255,255,0.3) 50%,transparent 100%);
  animation:shimmer 2s infinite;
}
@keyframes shimmer{0%{transform:translateX(-100%)}100%{transform:translateX(100%)}}
.progress-text{font-size:11px;color:var(--gray);font-weight:500}

/* ===== Login Page ===== */
.login-page{
  min-height:100vh;display:flex;flex-direction:column;
  align-items:center;justify-content:center;
  background:linear-gradient(135deg,#3B54D4 0%,#4F6EF7 30%,#6C63FF 60%,#8B5CF6 100%);
  position:relative;overflow:hidden;padding:20px;
}
.login-page::before{
  content:'';position:absolute;width:400px;height:400px;
  background:radial-gradient(circle,rgba(255,255,255,0.1) 0%,transparent 70%);
  top:-150px;right:-100px;animation:floatA 6s ease-in-out infinite;
}
.login-page::after{
  content:'';position:absolute;width:300px;height:300px;
  background:radial-gradient(circle,rgba(255,255,255,0.08) 0%,transparent 70%);
  bottom:-100px;left:-80px;animation:floatB 8s ease-in-out infinite;
}
@keyframes floatA{0%,100%{transform:translate(0,0)}50%{transform:translate(-20px,20px)}}
@keyframes floatB{0%,100%{transform:translate(0,0)}50%{transform:translate(20px,-20px)}}

.login-card{
  background:rgba(255,255,255,0.92);
  backdrop-filter:blur(24px);-webkit-backdrop-filter:blur(24px);
  border-radius:var(--radius-xl);padding:36px 28px;
  width:100%;max-width:420px;
  box-shadow:0 24px 64px rgba(0,0,0,0.2),0 0 0 1px rgba(255,255,255,0.2);
  position:relative;z-index:1;
  animation:slideUp .5s ease;
}
@keyframes slideUp{from{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}

.login-logo{text-align:center;margin-bottom:28px}
.login-logo-icon{font-size:48px;margin-bottom:8px;display:block;filter:drop-shadow(0 4px 8px rgba(79,110,247,0.3))}
.login-logo h1{font-size:22px;color:var(--primary);font-weight:700;margin-bottom:4px}
.login-logo p{font-size:13px;color:var(--gray)}
.login-decor{
  display:flex;justify-content:center;gap:16px;margin-bottom:24px;
  font-size:24px;opacity:.6;
}
.login-error{
  color:var(--red);text-align:center;margin-bottom:14px;font-size:13px;
  background:var(--red-light);padding:8px;border-radius:8px;
}
.login-footer{text-align:center;margin-top:20px}
.login-footer a{color:var(--primary);font-weight:600}
.login-footer .hint{font-size:11px;color:var(--gray);margin-top:10px}
.login-copy{font-size:11px;color:var(--gray);text-align:center;margin-top:16px;opacity:.7}

/* ===== Tab Nav ===== */
.tab-nav{
  display:flex;gap:4px;margin-bottom:16px;
  background:var(--card);border-radius:var(--radius);padding:4px;
  box-shadow:var(--shadow);overflow-x:auto;
  -webkit-overflow-scrolling:touch;
}
.tab-nav::-webkit-scrollbar{display:none}
.tab-nav a{
  padding:10px 16px;border-radius:10px;font-size:13px;font-weight:600;
  color:var(--gray);white-space:nowrap;flex-shrink:0;
  transition:all .2s;display:flex;align-items:center;gap:4px;
}
.tab-nav a.active{background:var(--primary);color:#fff;box-shadow:0 2px 8px rgba(79,110,247,0.3)}

/* ===== Search Box ===== */
.search-box{
  position:relative;margin-bottom:16px;
}
.search-box input{
  width:100%;padding:12px 14px 12px 42px;
  border:2px solid var(--border);border-radius:var(--radius-lg);
  font-size:14px;background:var(--card);transition:border-color .2s,box-shadow .2s;
}
.search-box input:focus{border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-light)}
.search-box::before{
  content:'🔍';position:absolute;left:14px;top:50%;transform:translateY(-50%);
  font-size:15px;pointer-events:none;
}

/* ===== Test/Exam Styles ===== */
.test-container{max-width:800px;margin:0 auto;padding:20px 16px}
.test-header{
  background:var(--card);border-radius:var(--radius-lg);padding:16px;
  margin-bottom:16px;display:flex;justify-content:space-between;align-items:center;
  flex-wrap:wrap;gap:10px;box-shadow:var(--shadow);
}
.timer{display:flex;align-items:center;gap:6px;font-size:18px;font-weight:700;color:var(--orange)}
.question-card{
  background:var(--card);border-radius:var(--radius-lg);padding:20px;
  margin-bottom:12px;box-shadow:var(--shadow);
}
.question-num{
  display:inline-block;padding:3px 10px;background:var(--primary-light);
  color:var(--primary-dark);border-radius:20px;font-size:12px;font-weight:600;
  margin-bottom:10px;
}
.question-text{font-size:15px;font-weight:500;margin-bottom:14px;line-height:1.7}
.options-list{display:flex;flex-direction:column;gap:8px}
.option-item{
  padding:12px 14px;border:2px solid var(--border);border-radius:var(--radius);
  cursor:pointer;transition:all .2s;display:flex;align-items:center;gap:10px;
}
.option-item:hover{border-color:var(--primary);background:var(--primary-soft)}
.option-item.selected{border-color:var(--primary);background:var(--primary-light)}
.option-item.correct{border-color:var(--green);background:var(--green-light)}
.option-item.wrong{border-color:var(--red);background:var(--red-light)}
.option-label{
  width:26px;height:26px;border-radius:50%;background:var(--bg);
  display:flex;align-items:center;justify-content:center;
  font-size:12px;font-weight:700;flex-shrink:0;
}

/* ===== Result Panel ===== */
.result-panel{
  background:var(--card);border-radius:var(--radius-xl);padding:28px;
  text-align:center;margin-bottom:20px;box-shadow:var(--shadow);
}
.score-circle{
  width:130px;height:130px;border-radius:50%;margin:0 auto 16px;
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  background:conic-gradient(var(--primary) var(--score-deg),#E2E8F0 var(--score-deg));
  position:relative;
}
.score-circle::before{
  content:'';width:106px;height:106px;background:var(--card);
  border-radius:50%;position:absolute;
}
.score-circle span{position:relative;z-index:1;font-size:34px;font-weight:700;color:var(--primary)}
.score-circle small{position:relative;z-index:1;font-size:12px;color:var(--gray)}

/* ===== Chapter List ===== */
.chapter-list{display:flex;flex-direction:column;gap:8px}
.chapter-item{
  background:var(--card);border-radius:var(--radius);padding:14px 16px;
  display:flex;align-items:center;justify-content:space-between;
  cursor:pointer;transition:all .2s;border:2px solid transparent;
  box-shadow:var(--shadow);
}
.chapter-item:hover{border-color:var(--primary)}
.chapter-item.completed{border-color:var(--green)}
.chapter-left{display:flex;align-items:center;gap:10px}
.chapter-num{
  width:30px;height:30px;border-radius:50%;background:var(--primary-light);
  color:var(--primary);display:flex;align-items:center;justify-content:center;
  font-size:12px;font-weight:700;flex-shrink:0;
}
.chapter-actions{display:flex;gap:6px}

/* ===== Recite Card ===== */
.recite-card{
  background:linear-gradient(135deg,#F0FDF4 0%,#D1FAE5 100%);
  border-radius:var(--radius-lg);padding:20px;margin-bottom:12px;
  border:1px solid #BBF7D0;
}

/* ===== Profile ===== */
.profile-form{max-width:700px;margin:0 auto}
.form-row{display:grid;grid-template-columns:1fr;gap:14px}

/* ===== Video Badge ===== */
.video-badge{
  display:inline-flex;align-items:center;gap:3px;
  padding:3px 8px;border-radius:20px;font-size:11px;font-weight:600;
  background:var(--pink-light);color:#BE185D;
}

/* ===== Toast ===== */
.toast-container{
  position:fixed;bottom:80px;left:50%;transform:translateX(-50%);
  z-index:9999;display:flex;flex-direction:column;gap:8px;align-items:center;
}
.toast{
  padding:12px 20px;border-radius:var(--radius);background:var(--dark);
  color:#fff;box-shadow:var(--shadow-lg);display:flex;align-items:center;gap:8px;
  font-size:13px;font-weight:500;animation:toastIn .3s ease;
  max-width:90vw;text-align:center;white-space:nowrap;
}
@keyframes toastIn{from{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}

/* ===== Footer ===== */
.site-footer{text-align:center;padding:20px 16px;color:var(--gray);font-size:12px}

/* ===== Admin Sidebar ===== */
.admin-layout{display:flex;min-height:100vh}
.admin-sidebar{
  width:220px;background:var(--dark);color:#fff;position:fixed;
  height:100vh;overflow-y:auto;z-index:100;
}
.sidebar-logo{padding:16px;font-size:16px;font-weight:700;border-bottom:1px solid rgba(255,255,255,0.1)}
.sidebar-menu{padding:8px}
.sidebar-menu a{
  display:flex;align-items:center;gap:8px;padding:10px 12px;
  border-radius:var(--radius);margin-bottom:2px;font-size:13px;transition:background .2s;
}
.sidebar-menu a:hover,.sidebar-menu a.active{background:rgba(255,255,255,0.1)}
.admin-main{flex:1;margin-left:220px;padding:20px;min-height:100vh}

/* ===== Notification Banner ===== */
.notice-banner{
  background:linear-gradient(135deg,var(--primary-soft),var(--purple-light));
  border:1px solid var(--primary-light);border-radius:var(--radius-lg);
  padding:16px;margin-bottom:20px;
}
.notice-banner h4{font-size:15px;font-weight:600;margin-bottom:6px;display:flex;align-items:center;gap:6px}
.notice-banner p{font-size:13px;color:var(--gray);line-height:1.6;margin-bottom:12px}

/* ===== Animations ===== */
@keyframes fadeIn{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}
.fade-in{animation:fadeIn .4s ease}
@keyframes pulse{0%,100%{transform:scale(1)}50%{transform:scale(1.05)}}

/* ===== Scrollbar ===== */
::-webkit-scrollbar{width:6px;height:6px}
::-webkit-scrollbar-track{background:transparent}
::-webkit-scrollbar-thumb{background:var(--border);border-radius:3px}
::-webkit-scrollbar-thumb:hover{background:var(--gray-light)}

/* ===== Tablet (>=768px) ===== */
@media(min-width:768px){
  .stats-grid{grid-template-columns:repeat(4,1fr)}
  .quick-entry{gap:14px}
  .category-grid{grid-template-columns:repeat(4,1fr)}
  .course-grid{grid-template-columns:repeat(2,1fr)}
  .dashboard{padding:28px 24px}
  .welcome-banner{padding:32px 28px}
  .welcome-banner h2{font-size:24px}
  .stat-info h3{font-size:26px}
  .login-card{padding:44px 40px}
  .form-row{grid-template-columns:repeat(2,1fr)}
  .admin-sidebar{width:240px}
  .admin-main{margin-left:240px}
  .stats-grid{gap:16px}
}

/* ===== Desktop (>=1024px) ===== */
@media(min-width:1024px){
  .hamburger{display:none}
  .nav-menu{display:flex}
  .user-name{display:block}
  .container{padding:0 24px}
  .dashboard{padding:32px 24px}
  .stats-grid{gap:18px}
  .category-grid{grid-template-columns:repeat(5,1fr)}
  .course-grid{grid-template-columns:repeat(3,1fr)}
  .welcome-banner{padding:36px 32px}
  .welcome-banner h2{font-size:26px}
  .quick-entry{gap:16px}
}
@media(min-width:1280px){
  .course-grid{grid-template-columns:repeat(4,1fr)}
}

/* ===== 统一圆角 ===== */
.card, .stat-card, .policy-card, .exam-card, .course-card { border-radius: var(--radius-lg); }

/* ===== 移动端点击区域优化 ===== */
@media (max-width: 768px) {
  .option-item { min-height: 48px; display: flex; align-items: center; }
  .option-label { width: 32px; height: 32px; font-size: 15px; }
  .btn { min-height: 44px; }
  .btn-sm { min-height: 36px; }
  .form-input, .form-select, .form-textarea { font-size: 16px; } /* 防止iOS缩放 */
  .hamburger { width: 44px; height: 44px; }
  .badge, .text-xs { font-size: 12px; }
  .text-sm { font-size: 13px; }
  .course-code, .logo-sub { font-size: 11px; }
}

/* ===== touch-action 优化 ===== */
.touch-scroll { -webkit-overflow-scrolling: touch; touch-action: pan-x pan-y; }
.option-item, .btn, a, button, input, select, textarea { touch-action: manipulation; }

/* ===== 视频响应式 ===== */
video { max-width: 100%; height: auto; }

/* ===== Toast 统一样式 ===== */
.toast-container { position: fixed; top: 20px; right: 20px; z-index: 99999; display: flex; flex-direction: column; gap: 8px; }
.toast { padding: 12px 20px; border-radius: 12px; background: #fff; box-shadow: 0 4px 20px rgba(0,0,0,0.15); display: flex; align-items: center; gap: 8px; font-size: 14px; animation: toastIn 0.3s ease; }
.toast-success { border-left: 4px solid #10b981; }
.toast-error { border-left: 4px solid #ef4444; }
@keyframes toastIn { from { transform: translateX(100%); opacity: 0; } to { transform: translateX(0); opacity: 1; } }